forked from TrueCloudLab/neoneo-go
108 lines
2.5 KiB
Go
108 lines
2.5 KiB
Go
package core
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import (
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"github.com/CityOfZion/neo-go/pkg/core/storage"
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"github.com/CityOfZion/neo-go/pkg/core/transaction"
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"github.com/CityOfZion/neo-go/pkg/crypto/keys"
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"github.com/CityOfZion/neo-go/pkg/io"
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"github.com/CityOfZion/neo-go/pkg/util"
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)
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const feeMode = 0x0
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// Assets is mapping between AssetID and the AssetState.
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type Assets map[util.Uint256]*AssetState
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func (a Assets) commit(b storage.Batch) error {
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buf := io.NewBufBinWriter()
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for hash, state := range a {
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state.EncodeBinary(buf.BinWriter)
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if buf.Err != nil {
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return buf.Err
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}
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key := storage.AppendPrefix(storage.STAsset, hash.Bytes())
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b.Put(key, buf.Bytes())
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buf.Reset()
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}
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return nil
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}
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// putAssetStateIntoStore puts given asset state into the given store.
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func putAssetStateIntoStore(s storage.Store, as *AssetState) error {
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buf := io.NewBufBinWriter()
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as.EncodeBinary(buf.BinWriter)
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if buf.Err != nil {
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return buf.Err
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}
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key := storage.AppendPrefix(storage.STAsset, as.ID.Bytes())
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return s.Put(key, buf.Bytes())
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}
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// AssetState represents the state of an NEO registered Asset.
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type AssetState struct {
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ID util.Uint256
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AssetType transaction.AssetType
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Name string
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Amount util.Fixed8
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Available util.Fixed8
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Precision uint8
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FeeMode uint8
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FeeAddress util.Uint160
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Owner *keys.PublicKey
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Admin util.Uint160
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Issuer util.Uint160
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Expiration uint32
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IsFrozen bool
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}
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// DecodeBinary implements Serializable interface.
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func (a *AssetState) DecodeBinary(br *io.BinReader) {
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br.ReadLE(&a.ID)
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br.ReadLE(&a.AssetType)
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a.Name = br.ReadString()
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br.ReadLE(&a.Amount)
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br.ReadLE(&a.Available)
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br.ReadLE(&a.Precision)
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br.ReadLE(&a.FeeMode)
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br.ReadLE(&a.FeeAddress)
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a.Owner = &keys.PublicKey{}
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a.Owner.DecodeBinary(br)
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br.ReadLE(&a.Admin)
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br.ReadLE(&a.Issuer)
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br.ReadLE(&a.Expiration)
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br.ReadLE(&a.IsFrozen)
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}
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// EncodeBinary implements Serializable interface.
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func (a *AssetState) EncodeBinary(bw *io.BinWriter) {
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bw.WriteLE(a.ID)
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bw.WriteLE(a.AssetType)
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bw.WriteString(a.Name)
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bw.WriteLE(a.Amount)
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bw.WriteLE(a.Available)
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bw.WriteLE(a.Precision)
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bw.WriteLE(a.FeeMode)
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bw.WriteLE(a.FeeAddress)
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a.Owner.EncodeBinary(bw)
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bw.WriteLE(a.Admin)
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bw.WriteLE(a.Issuer)
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bw.WriteLE(a.Expiration)
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bw.WriteLE(a.IsFrozen)
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}
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// GetName returns the asset name based on its type.
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func (a *AssetState) GetName() string {
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if a.AssetType == transaction.GoverningToken {
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return "NEO"
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} else if a.AssetType == transaction.UtilityToken {
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return "NEOGas"
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}
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return a.Name
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}
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